It's your decision on the day.Thats what we earn those popstar wages for!
Please stick to your brief though.You tell the other guy that you will only abort above 80 for a very small list of things,one of which is some variation of the vague"Inability of the aircraft to sustain controlled flight".To my mind that is a triple hydraulic failure,Cessna wrapped round the tailplane,half the wing on the bumper of a land rover type scene.It will take a bit of work but you can fly out with an out of trim stab.Its the old "Go Mindedness" argument.Statistics prove its the way to go but we all know about statistics dont we.